package com.dragon.common.core.controller;

import java.beans.PropertyEditorSupport;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Date;
import java.util.List;
import java.util.zip.GZIPInputStream;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.WebDataBinder;
import org.springframework.web.bind.annotation.InitBinder;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.alibaba.fastjson.JSONObject;
import com.dragon.common.core.domain.AjaxResult;
import com.dragon.common.core.domain.AjaxResult.Type;
import com.dragon.common.core.domain.entity.SysUser;
import com.dragon.common.core.page.PageDomain;
import com.dragon.common.core.page.TableDataInfo;
import com.dragon.common.core.page.TableSupport;
import com.dragon.common.utils.DateUtils;
import com.dragon.common.utils.ServletUtils;
import com.dragon.common.utils.ShiroUtils;
import com.dragon.common.utils.SslUtils;
import com.dragon.common.utils.StringUtils;
import com.dragon.common.utils.html.HtmlUtil;
import com.dragon.common.utils.sql.SqlUtil;

/**
 * web层通用数据处理
 * 
 * @author dragon
 */
public class BaseController
{
    protected final Logger logger = LoggerFactory.getLogger(this.getClass());
    
    public String httpRequestToJSON(String requestUrl, String requestMethod, String charset) {
        StringBuilder buffer = new StringBuilder();
        InputStream inputStream = null;
        InputStreamReader inputStreamReader = null;
        BufferedReader bufferedReader = null;
        try {
            URL url = new URL(requestUrl);
            if("https".equalsIgnoreCase(url.getProtocol())){
				SslUtils.ignoreSsl();
			}
            // http协议传输
            HttpURLConnection httpUrlConn = (HttpURLConnection) url.openConnection();
            
            httpUrlConn.setDoOutput(true);
            httpUrlConn.setDoInput(true);
            httpUrlConn.setUseCaches(false);
            // 设置请求方式（GET/POST）
            httpUrlConn.setRequestMethod(requestMethod);
            httpUrlConn.connect();
            String encoding = httpUrlConn.getContentEncoding();
            // 将返回的输入流转换成字符串
            inputStream = httpUrlConn.getInputStream();
            if (encoding != null && encoding.contains("gzip")) {// 首先判断服务器返回的数据是否支持gzip压缩，
                // 如果支持则应该使用GZIPInputStream解压，否则会出现乱码无效数据
            	inputStreamReader = new InputStreamReader(new GZIPInputStream(inputStream),charset);
            }else {
                //取得该连接的输入流，以读取响应内容
            	inputStreamReader = new InputStreamReader(inputStream,charset);
            }
            bufferedReader = new BufferedReader(inputStreamReader);
            String str = null;
            while ((str = bufferedReader.readLine()) != null) {
                buffer.append(str);
            }
            httpUrlConn.disconnect();
            return buffer.toString();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
			try {
				inputStream.close();
				inputStreamReader.close();
				bufferedReader.close();
			} catch (IOException e) {
				// e.printStackTrace();
			}
		}
        return null;
    }

    /**
     * 将前台传递过来的日期格式的字符串，自动转化为Date类型
     */
    @InitBinder
    public void initBinder(WebDataBinder binder)
    {
        // Date 类型转换
        binder.registerCustomEditor(Date.class, new PropertyEditorSupport()
        {
            @Override
            public void setAsText(String text)
            {
                setValue(DateUtils.parseDate(text));
            }
        });
    }

    /**
     * 设置请求分页数据
     */
    protected void startPage()
    {
        PageDomain pageDomain = TableSupport.buildPageRequest();
        Integer pageNum = pageDomain.getPageNum();
        Integer pageSize = pageDomain.getPageSize();
        if (StringUtils.isNotNull(pageNum) && StringUtils.isNotNull(pageSize))
        {
            String orderBy = SqlUtil.escapeOrderBySql(pageDomain.getOrderBy());
            PageHelper.startPage(pageNum, pageSize, orderBy);
        }
    }

    /**
     * 设置请求排序数据
     */
    protected void startOrderBy()
    {
        PageDomain pageDomain = TableSupport.buildPageRequest();
        if (StringUtils.isNotEmpty(pageDomain.getOrderBy()))
        {
            String orderBy = SqlUtil.escapeOrderBySql(pageDomain.getOrderBy());
            PageHelper.orderBy(orderBy);
        }
    }

    /**
     * 获取request
     */
    public HttpServletRequest getRequest()
    {
        return ServletUtils.getRequest();
    }

    /**
     * 获取response
     */
    public HttpServletResponse getResponse()
    {
        return ServletUtils.getResponse();
    }

    /**
     * 获取session
     */
    public HttpSession getSession()
    {
        return getRequest().getSession();
    }

    /**
     * 响应请求分页数据
     */
    @SuppressWarnings({ "rawtypes", "unchecked" })
    protected TableDataInfo getDataTable(List<?> list)
    {
        TableDataInfo rspData = new TableDataInfo();
        rspData.setCode(0);
        rspData.setRows(list);
        rspData.setTotal(new PageInfo(list).getTotal());
        return rspData;
    }

    /**
     * 响应返回结果
     * 
     * @param rows 影响行数
     * @return 操作结果
     */
    protected AjaxResult toAjax(int rows)
    {
        return rows > 0 ? success() : error();
    }

    /**
     * 响应返回结果
     * 
     * @param result 结果
     * @return 操作结果
     */
    protected AjaxResult toAjax(boolean result)
    {
        return result ? success() : error();
    }

    /**
     * 返回成功
     */
    public AjaxResult success()
    {
        return AjaxResult.success();
    }

    /**
     * 返回失败消息
     */
    public AjaxResult error()
    {
        return AjaxResult.error();
    }

    /**
     * 返回成功消息
     */
    public AjaxResult success(String message)
    {
        return AjaxResult.success(message);
    }

    /**
     * 返回失败消息
     */
    public AjaxResult error(String message)
    {
        return AjaxResult.error(message);
    }

    /**
     * 返回错误码消息
     */
    public AjaxResult error(Type type, String message)
    {
        return new AjaxResult(type, message);
    }

    /**
     * 页面跳转
     */
    public String redirect(String url)
    {
        return StringUtils.format("redirect:{}", url);
    }

    /**
     * 获取用户缓存信息
     */
    public SysUser getSysUser()
    {
        return ShiroUtils.getSysUser();
    }

    /**
     * 设置用户缓存信息
     */
    public void setSysUser(SysUser user)
    {
        ShiroUtils.setSysUser(user);
    }

    /**
     * 获取登录用户id
     */
    public Long getUserId()
    {
        return getSysUser().getUserId();
    }

    /**
     * 获取登录用户名
     */
    public String getLoginName()
    {
        return getSysUser().getLoginName();
    }
}
